The author of 《Analysis of lithium separation by modified zeolite using fuzzy logic: equilibrium, kinetics and thermodynamic》 were Farhadi, Mehraz; Rashidi, Abbas; Mallah, Mohammad Hassan. And the article was published in Desalination and Water Treatment in 2019. Product Details of 33100-27-5 The author mentioned the following in the article:
Modified natural zeolite with crown ethers such as 12crown4, 15crown5, 6crown18 and benzo- 15crown5 have been characterized using Fourier transform infra-red, scanning electron microscope and Brunauer-Emmett-Teller instruments. Concentration of 0.01 mg/L of complexing agent and modification time of 240 h were obtained as optimum parameters. Effective parameters such as pH, adsorbent dose, contact time, type and concentration of crown ethers, ion strength, and initial concentration of lithium ion and temperature of complex formation were also investigated and optimized in this adsorption process. Under the optimized exptl. conditions pH equal to 7, one gram of adsorbent in 2 mL solution of 0.01 mg/L and temperature of 40°C, the most lithium adsorption (87%) was acquired. The effect of interference ions on the adsorption process was also considered. The results showed that Freundlich model is one of the best descriptive models for this process. The adsorption kinetics of lithium on modified zeolite follows the pseudo second-order model. Thermodn. parameters were calculated and shown that adsorption process is an endothermic and spontaneous process. Statistical anal. of exptl. results was done by fuzzy logic tool of MATLAB software and three-dimensional diagrams of different parameters effect on the adsorption percentage were also presented. The experimental process involved the reaction of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Product Details of 33100-27-5)
1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Product Details of 33100-27-5
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem